Dan Robinson gives the third of eight lectures on Reid's Critique of David Hume at Oxford. Causality arises from a habit of the mind formed by repeated experiences. "There is nothing in any objects to persuade us, that they are either always remote or always contiguous; and when from experience and observation we discover, that their relation in this particular is invariable, we, always conclude there is some secret cause, which separates or unites them..."
Under "David Hume", the Stanford Encyclopedia of Philosophy begins with, "The most important philosopher ever to write in English". His most formidable contemporary critic was the fellow Scot, Thomas Reid, the major architect of so-called Scottish Common Sense Philosophy. The most significant features of Hume's work, as understood by Reid, are the representive theory of perception, the nature of causation and causal concepts, the nature of personal identity and the foundations of morality. Each of these topics is presented in a pair of lectures, the first summarizing Hume's position and the second Reid's critique of that position.